Which function is used to determine whether the variable’s value is either TRUE or FALSE?

Which PHP function will return an array of values from $start to $end.

$_SERVER, $_COOKIE, $_FILES, $_ENV are examples of PHP built-in variables called:

Which of the following will return TRUE?

The function setcookie( ) is used to

Which is used to format a number ?

Correct way to profile a PHP function (without relying on 3rd party libraries and/or PHP extensions)?

Which statement is correct?

Which is incorrect about empty()?

Which is true about the curl_setopt() API?

What is the use of memory_get_peak_usage()?